Although I know this post was written long ago, the names you mentioned are of interest to me. I have been trying to find information about my great-grandmother's parents. Her name was Maria (Margara) Tosado y Vargas de Herdandez. She was born about 1845 and died after 1930, and I know when she was married she lived in both Camuy and Barceloneta. The persons you mentioned (Ramon Tosado and Dominga Vargas) may be connected to my great grandmother. Have you learned any further information which may help me?